The alpha in the pack is a wolf in sheep's clothing and Olivia Fernández has just nailed him. In a race against time to rescue her mate, who now lies in the jaws of an insatiable beast, will her own life at risk. The pack is about to lose their alpha, but is he the leader of the pack?

The three women detectives are about to find the alpha wolf behind the packs, but to do so, they'll have to become a pack of women willing to show their teeth: just as new packs are born, the weak ones begin to die, although a fundamental lead may disappear with them. "The wolf" keeps claiming victims, although his insatiable hunt is about to reach an end.

A cornered hunting animal to become a bite is erratic and unpredictable. Tailed closely by the police, "the wolf" uses his last resources to wriggle out alive. Olivia's past is back and she confronts her son Gonzalo with an awkward truth, but the detective has bigger problems: death is about to give its verdict on the case, although not everything is lost.

"The Wolf" has no scruples and, just like in wild life, is more effective and lethal when in pack. Olivia and her investigation staff are marked by the dark online game, showing that they are willing to do everything in order to accomplish their mission. Celeste manages to go into the jaws of this insatiable beast, but her courage puts her in a position from which she will hardly come out alive.

Ossandón's destiny casts serious doubts in the police to find Blanca's whereabouts; her parents, behind the investigation, offer a reward in exchange of information. Murillo and Fernández understand they're behind an imaginary man that hides behind his different packs to make his psychological profile invisible. A new lead of Blanca is leaked on the network.

In the midst of the investigation and the anguish to find her daughter, Bruno reveals to his wife and Fernández a hidden truth about missing Blanca. A new investigative plot arises in the case and would involve Belmar. Other packs join the wolf's game, bringing Olivia closer to the dangerous game; perhaps too close.

Olivia and Elisa dangerously get closer to "the wolf's" jaws thanks to Celeste's help in the shadows; but this is not for free and puts even the detectives in danger. The police discover an organization that marks and attacks specific women, just like it happened with Blanca. The murderers are closer than they think.

A complaint of sexual abuse in a wealthy area of Santiago, shakes everyone. While the student girls protest, Blanca Ibarra, their leader, goes missing. The police look for leads and Blanca's sister gets involved in a dangerous online game to help them. Out of the blue, a video of the missing girl is leaked on the network: the police fear it's too late for her.